| Answer | Crossword Clue |
|---|---|
| humming | Make a low, steady continuous sound like that of a bee |
| buzz | to make a low continuous humming sound like that of a bee |
| humming | (of a place) Be filled with a low, steady continuous sound |
| purring | (of a cat) Make a low continuous vibratory sound usually expressing contentment |
| whirring | (esp. of a machine or a bird's wings) Make a low, continuous, regular sound |
| murmured | Make a low continuous sound |
